meeeiman



*gettin-taten lchent @new ynrriaovnn mostraron sounnme TILES.-

"dtte tlphule mgmttn in ligen dettati tutent mit mating pitt nf tigtannu.

TO ALL WHOM IT MAY CONERN:

Be it known that I, ANDREWS T. MERRIM'AN, oi' IRutland, in the county ofRutland, and State of Vermont,

`have invented anew and useful improvement in Machine for SquaringTiles; and I do hereby declare that the following is a full, clear, andexact descriptionI thereof, which will enable others skilled in the artto make and use thesame, reference being had to the `accompanyingdrawings, forming partof this specification, in which i Figurelrepresents a side elevation of this invention.

Figure 2 is a transverse vertical section of the same. :Similar lettersof reference indicate like' parts.

This invention relates to an improvement in the method of hanging theframe in which the tiles are clamped during the operation of grindingoff their edges, and also to certain improvements in the construction ofsaid frame, wherebythe same can be readily adjusted for tile ofdifferent size.

The machine which I use for squaring or l `grinding oh" the edges oftiles is constructed of a frame, A, ci' Wood or any other suitablematerial, the top and bottom cross-bars of which form the bearings for avertical arbor, B, on -which the grinding disk or plate C is mounted,This arbor receives a revolving motion from the driving-shaft D, whichconnects thevsame by a bevel gear, or in any other suitable manner. IThetilesto be groundor squared are fastened in a swinging frame, E, whichis composed oi' a vertical plate, c, from'which two arms, d, entend inahorizontal direction, and through the end of these arms passes a pin, c,which has its bearings in suitable brackets, f, attached to one of theuprights of the main frame A. The plate c is thus free to swing back`and forth, and also to rise and fall freely until one of its armsstrikes au adjustabler collar, @which is secured on the pin e in thedesired position by means of a set-screw, h. Theplate e is providedwitha clamp, z', which is operated by a thumb-screw, j, (see fig. 2,) andwhich serves to secure the tiles tobeground or squared on the plate c.'Said clamp is composed of a hinged lever, through one end of whichpasses the thumb-screw j; whereas its opposite end is furnished with asoft or elastic pad, 7c, so that the same when pressed down upon a tilewill not injure or break it. The tiles are adjusted in the desiredposition by means of a stationary lip, Z, projecting from the plate e,and by agauge, m, which is adjustable on said plate by set-screws, n.This gauge is adjusted to correspond to the size of tbetile to beground, and the tiles are secured to the plate c one after the other bymeans of thevclamp' z', and byallowing its edge to bear dorm on' thegrinding disk O the surplusis taken off. The distance to which the platee with the til-e is permitted to sink down is determined .by theadjustable collar g, which is set to .correspond to the'size of tileunder operation, and the operation of grinding or squaring tiles can becarried on with the greatest facility and Without requiring muchattention. By swinging the plate c back and forth on the` pin e, thetile is prevented from bearing, down upon the samespot on the grindingdisk, and the surface of said disk is preserved even, and the operationof grinding is facilitated. The tiles are easily secured in position,and, if desired, the-plate c and the gauge m can be readily adjusted forhexagonal or octagonal tiles, or for tiles of any other shape. V

What I claim as new, and desire to secure by Letters Patent, is j 1. Thevertical pin e, in 'combination with the plate c, to which the tiles areclamped, substantially as herein described; so that the plate can riseandv fall and sweep over the grinding disk yina circular or oscillatingmotion.

2. The adjustable collar g, in combination ivithrising and fallingswinging plate e, constructed. and operating substantially as and forthe purpose set forth. v

3. The clamp z', composed of a hinged lever with thumb-screw and elasticpad, as and for the purpose described. j i i 4. The adjustable gauge m,in ombination with the clamp e' and plate c, constructed and operatingsubstantially asand for the purpose set forth. v

' ANDREWS T. MERRIMAN.

Witnesses:-

Fnrnrrn VAUGHN, H. F. REYNOLDS.

